{
  "patent_number": "US 11325075",
  "country": "US",
  "title": "Two-Layer Membrane with Tiny, Ordered Pores for Carbon Capture",
  "original_title": "Carbon capture membrane",
  "summary": "This patent describes a two-layer filter, called a mixed matrix membrane, that uses a support layer with precisely arranged, uniform tiny holes and a carbon dioxide capture layer to trap CO2.",
  "what_it_does": "This patent describes a carbon capture mixed matrix membrane designed to separate carbon dioxide from other gases. It features a \"polymeric support layer\" (Claim 1) that is 50-500 micrometers thick and contains \"spatially ordered uniform sized pores\" (Claim 1), meaning the tiny holes are arranged in a precise, consistent pattern. These pores can range from 100 nanometers to 100 micrometers in diameter (Claim 5). On or within this support layer is a \"carbon dioxide capture layer\" (Claim 1), which uses solid porous materials with specific \"carbon dioxide adsorption sites\" (Claim 1) to attract and hold CO2 molecules. These capture materials can include amine-functionalised substances or metal-organic frameworks like ZIF-8 (Claim 8). For example, exhaust gas from a factory could pass through this membrane, with the capture layer selectively binding the CO2 while allowing other gases to pass through.",
  "what_it_does_not_cover": [
    "Does not cover membranes where the polymeric support layer has randomly sized or arranged pores, as it specifies \"spatially ordered uniform sized pores\" (Claim 1).",
    "Does not cover membranes with a support layer made of non-polymeric materials, as it explicitly claims a \"polymeric support layer\" (Claim 1).",
    "Does not cover general gas separation membranes that are not specifically designed with \"at least one carbon dioxide adsorption site\" (Claim 1).",
    "Does not cover membranes where the polymeric support layer is thinner than 50 micrometers or thicker than 500 micrometers (Claim 1).",
    "Does not cover membranes that are purely polymeric or purely inorganic, as it specifies a \"mixed matrix membrane\" (Claim 1) combining polymer and solid porous material."
  ],
  "filed": "2018-07-10",
  "granted": "2022-05-10",
  "expires": "2038-07-10",
  "status": "active",
  "holder": "Singapore University of Technology and Design",
  "holder_url": "https://patentbrief.org/company/singapore-university-of-technology-and-design",
  "inventors": [
    {
      "name": "Yuanyuan Zhang",
      "url": "https://patentbrief.org/inventor/yuanyuan-zhang"
    },
    {
      "name": "Mei Chee Tan",
      "url": "https://patentbrief.org/inventor/mei-chee-tan"
    },
    {
      "name": "Hong Yee Low",
      "url": "https://patentbrief.org/inventor/hong-yee-low"
    },
    {
      "name": "Him Cheng Wong",
      "url": "https://patentbrief.org/inventor/him-cheng-wong"
    }
  ],
  "times_cited": 0,
  "tags": [
    "environmental",
    "energy",
    "materials",
    "chemical_engineering",
    "manufacturing"
  ],
  "abstract": "There is provided a carbon capture mixed matrix membrane comprising: a polymeric support layer; and a carbon dioxide capture layer in contact with the polymeric support layer, the carbon dioxide capture layer comprising solid porous material with at least one carbon dioxide adsorption site, wherein the polymeric support layer comprises spatially ordered uniform sized pores. The polymeric support layer may be patterned by micro-molding, nanoimprinting, mold-based lithography or other suitable lithographic process. The carbon dioxide capture layer may comprise amine-functionalised material, metal-organic frameworks such as zeolite imidazolate framework 8 (ZIF-8) or copper benzene-1,3,5-tricarboxylate (Cu-BTC) which may or may not be amine modified. There is also provided a membrane module comprising at least one carbon capture mixed matrix membrane and a method of forming the carbon capture mixed matrix membrane.",
  "url": "https://patentbrief.org/patent/us/11325075/carbon-capture-membrane",
  "markdown_url": "https://patentbrief.org/patent/us/11325075/carbon-capture-membrane/md",
  "google_patents_url": "https://patents.google.com/patent/US11325075",
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}